Wheel



Patented Jan. I, 1924.

aaaiaa SYDNEY I. rREscoT'r, 0F NEW YORK, N. Y., AND FRANCIS' J. RUMMLER,or LYND-` HURsT, NEW Jnasnv.

WHEEL.

Application ined Febriiarjg 13, 1922. f serial N6. 536,043.

United States, respectively, residingiinthe' city, county, and State ofNew York, and the town of Lyndhurst, county `of Bergen, and State of NewJersey, have invented a new and useful Improvement in Wheels, of whichthe following is a specification.

This invention relates to an improvement in wheels, particularly topressed steel wheels of the disc t-ype.

In our co-pending application, Serial No. 344282, filed December12,1919, there is disclosed a standardized `or universal wheel in theuse of whicha tire may be changed alone. or with its rimas a unit, orwith its rim and wheel body as a unit, and which eliminates thenecessity heretofore existing 2O for the manufacture of numerous sizesof three distinct types of wheels, and possesses numerous otheradvantages peculiar to itself. The main object of the present inventionis the production of an improved wheel of this standardized or universaltype, possessing the further advantages' of fewer parts, increasedlightness-particularly rim lightness, increased resiliency, increasedstrength, faster and easier rim operation, improved vibration control,and lower cost. lVith these and other objects not specifically mentionedin view, the invention consists in certain constructions andcombinations which will be hereinafter fully described and thenspecifically set forth in the claims hereunto appended.

In the accompanying drawings, which form a part of this specificationand in which like characters Vof reference indicate the same or likeparts, Fig. l is a crosssectionalV view of a wheel constructed inaccordance with the invention; and Fig. 2 is a fragmentary detail sideview showing one of the vibration control devices illustrated in Fig. 1;

Referring to the drawings, which illustrate but one of many possibleconcrete embodiments of the invention, 43 indicates a hub provided witha disc mounting {lange-4, the outer face of which lies inboard from theplane of impact indicated by the, line PI in Fig.'l. The purpose of thuslocating the hub flange is to give the wheel as a whole a dish of.approximately 2 degrees whereby itis strengthened against the greatestlateral stresses developed inv road use.

It may be here remarked that the term inboard, as used herein, meanstoward the center of the vehicle on which the wheel is used, andoutboard means away fr ornthe same. l

Mounted on the hub 3 is a disc which, as shown, has a central section 5integral with and reve'rsely curved outboard into a saucershapedmid-section 6 integral with and 65 curved inboard into a rim supportingsec tion generally' indicated by the reference character 7 By aninspection of' Fig. l, it will be seen that the reversely curved portionof the disc crosses the plane of impact, that the saucer-shapedmid-section liesfoutboard from said plane of impact, and'that the rimengaging section re-crosses the said plane. The rim engaging section isfurther: distinguished byhaving an inboard; rim Supporting surface 8,and an outboard rim supporting surface 9, of substantially equalangularity; and it also has an intermediate surface l() of lesserangularity.

Seated on the rim engaging section 7 is a quick-detachable demountablerim 11 having bearing surfaces the angularity of which corresponds tothe angularity of the rim supporting surfaces 8, 9and 10. This rim hasan inboard tire supporting surface 12-of substantially the sameangularity as the in termediate surface 10, and also'has an out boardtire supporting surface 13 of equal but reversed angularity. Theparticular purpose of so forming the tire supporting surfaces of thedemountable rim 11 is to make easier the removal of a tire which hasbecome rusted to the rim, as fully explained in our co-pendingapplication Serial` No. 534,975, tiled February 8, 1922. l At lst thecrown of the 'projective radial curvature of the saucer-shapedmid-section 6 liesoutboard from the central section 5 before referredto, and at the axis of the wheel. The disc is shaped as above describedin order to make the wheel resilient and easy riding while moreeft'ectually absorbing radial shock and more l.eifectually resistingside stresses. This shape, however, by per. mitting disc yield in somedegree, invites excessive vibration. To prevent development of thisexcessive vibration and the crystallization and wheel breakage which mayfollow the saine, there is -provided means united with the disc and@,Ctllg 'C bration Wave propagation.

VVith'this end in View, there is provided a circular plate 15 lyingoutboardv and against the central section 5, its outer edge terminatingsubstantiallyy in the plane of impact. Thereis further provided anotherplate 16 lying inboard and 'against the central' section 5. The innerperiphery of the plate 16 is swaged at 17'over the inner peripheries ofthe section 5 and plate 15. The plate 16 is provided with an odd `numberof vibration damping salients 18, of the type disclosedand fullydescribed in our co-pending application, SerialNo. 515465 filed-Nov. 16,1921. At these saliente the plate 16 is spot-Welded to the mid-section 6.of the disc, and the plate 15 adjacent its periphery may also bespot-Welded to the disc.l There is further provided an equal odd number`of. vibration dampers united with the disc adjacent its outer peripheryand, as shown,- these dampers, marked 19, are united with themid-section 6 by spot-welding at.

.20, and-with the rim section 7 by spot-Welding at 21. f By means ofthese dempers, the rim section 7 is stiened in an odd number ofpositions and nodal lines are 'thereby established which are co-incidentwith the nodal lines established by the union of the salients 18 withthe disc. 4 Each of the dempers also acts as a nut in which is threadeda rim holding screw 22 thrusting against an vin the rim 11. The wheelbody .is held in position on the hub 8 against the'iange 4 by means of aseries of bolts 24 and skirted nuts 25, vthe latter being held by thedriving or braking torque, as fully explained in our 'co-pendingapplication, Serial No. 344,282 before referred to. y i

In the .structure above described, the rim section is permitted to yieldenough under road shock to give the Wheel the resiliency desired foreasy riding, but its tendency to develop periodic and excessivevibration is counteracted by the vibration controlling means acting tolimit yielding movements to single vibrations. The peculiar form of theWheel body prevents direct transmission of radial shock to the bearingsof the lwheel and strongly resists side Vstresses-in either direction.The extremely large bearing `surface of the rim permits the use of asmaller number of rim holding devices and vibration dampers; theparticular form of rim seat and rim lresults in a. material saving inWeight at the rim and further permits the yuse ofv smaller vibrationdampers in rim v.internal abutment 23 lholding devices, all of whichreduces initial i 2. A disc wheel body comprising a central sectionintegral with and reversely curved outboard into a saucer-shapedmid-section integral with and curved inboard into 'a rim -supportingsection, said central section being reinforced on its outboard Sidevby acircular plate and on its .inboard side by a Aplate having vibrationdamping salients.

3. A disc Wheel body comprlsing acentral Dsection integral with andreversely curved outboard into a saucer-shaped mid-section integral withand curved inboard into a rim supporting section, said rim supportingsection being reinforced at intervals by lvibraver:

tion damping devices permanently united therewith. L

'-4. A disc Wheel body comprising a central Y sect-ion integral Withandreversely curvedv outboard into a saucer-shaped midsection integral'withand curved inboard into a rim engaging section, said rim engagingsection having nboard and outboard rim supporting surfacesofsubstantially equal angularity andan intermediate surface of lesserangularity.

5. 'A disc Wheel body comprising a central section integral with andreversely curved outboard into a saucer-'shaped mid-section integralwith and curved inboard into a rim supporting section, the crown of theprojecc tive radial curvature of. said mid-section being outboard fromsaid central section.

6. The combination with adisc wheel body comprising a central sectionintegral with and reversely curved outboard into a saucershapedmid-section integral withand curved inboard into arim engaging sectionsaid rim engagingsection having inboard and outboard rim supporting'surfaces of substan tialiy equal angularity and an intermediate suraceof lesser angularity, of a rim seated on said- .rim engaging section andhaving bearing surfaces of corresponding angulari-ty.

7, The combination with a disc wheel body provided with an integral rimengaging section having inboard and outboard rim supporting surfaces ofsubstantially equal angu- 1arity` and an intermediate surface of lesser5 provided with an integral anularity, of a rim seated on said sectionan having,r bearing surfaces of corresponding angularity. Y

8. The combination with a disc Wheel body rim engaging section havinginboard and outboard rim supporting surfacesf of substantially equal'singularity and an intermediate surface 'of lesser angularity, of a rimseated on said sec- 10 tion and having bearing surfacesvof correspondingangularty, inboard tire supporting surface of substantially lthe sameangularity as said intermediate surface and an outboard tire supportingsurface of equal but reversed angularity. y

In testimony whereof, Wehave signed our names to this specification.

SYDNEY I. PRESCOTT. FRANCIS J. RUMMLER.

said rim also having an

